[Milsurplus] OT: Coaxial Relay ratings

[Peter Gottlieb]

That is great that you found this.  While I wouldn't bank on it for a commercial 
job using a different relay from a different manufacturer, the graph is saying 
Eugene has at least a good fighting chance of it working.

Peter



On 10/17/2014 6:23 PM, don davis wrote:
> Here is a useful graph of power vs frequency for typical relay classes (see
> page 50).  It's not really clear in most datasheets but these are not rated
> for hot switching.  I would avoid hot switching entirely to prevent early
> demise.  Unless the mfgr rates it for hot opn.
>
> 73 de don ad6pb
>
> http://www.teledynerelays.com/pdf/MW%20Switches.pdf
>
>
>
> -----Original Message-----
> From: Milsurplus [mailto:milsurplus-bounces at mailman.qth.net] On Behalf Of
> W2HX
> Sent: Friday, October 17, 2014 11:43 AM
> To: mstangelo at comcast.net
> Cc: milsurplus at mailman.qth.net
> Subject: Re: [Milsurplus] OT: Coaxial Relay ratings
>
> Both side of the relay should be close to 50 ohms. The transmitter will be
> 50 ohms nominal and the antenna coupler should get pretty close. Yes, HF for
> everything. One antenna tuner will be the harris RF-382A for 100-300W radios
> and the other will be Sunair GCU-1935 (for KW operating).  The RF-382 should
> be a quick project, but the GCU-1935 will take some time.
>
> 73 Eugene W2HX
>
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